libjava/classpath/native/fdlibm/w_asin.c

   1
   2 /* @(#)w_asin.c 1.3 95/01/18 */
   3 /*
   4  * ====================================================
   5  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
   6  *
   7  * Developed at SunSoft, a Sun Microsystems, Inc. business.
   8  * Permission to use, copy, modify, and distribute this
   9  * software is freely granted, provided that this notice
  10  * is preserved.
  11  * ====================================================
  12  *
  13  */
  14
  15 /*
  16  * wrapper asin(x)
  17  */
  18
  19
  20 #include "fdlibm.h"
  21
  22
  23 #ifdef __STDC__
  24         double asin(double x)           /* wrapper asin */
  25 #else
  26         double asin(x)                  /* wrapper asin */
  27         double x;
  28 #endif
  29 {
  30 #ifdef _IEEE_LIBM
  31         return __ieee754_asin(x);
  32 #else
  33         double z;
  34         z = __ieee754_asin(x);
  35         if(_LIB_VERSION == _IEEE_ || isnan(x)) return z;
  36         if(fabs(x)>1.0) {
  37                 return __kernel_standard(x,x,2); /* asin(|x|>1) */
  38         } else
  39             return z;
  40 #endif
  41 }